a pendant , a doll or a lemon n chilly are hanged by people at the entrance of their home , shop or at the front of their vehivle .Can we call such objects as emulet or talisman? Languages also go hand in hand with the culture.Im not sure if such usages are in practice among the native speakers of English.
While both amulet and talisman could be considered to be a means of protection from someone or something (based on belief), the words themselves just mean, in general, a piece of jewellery (in the one case) or an object that brings good fortune only (in the other case), rather than actually acting to protect against evil.
A better word that describes the nature of protection specifically is ward:
7 : a means of defense : PROTECTION
The same object can be described both in terms of its mundane existence and this sense of protection.
The doll is a ward against evil.